(function(){
    var kszc = document.querySelector('.sjh_kszc');
    kszc.addEventListener('click',function(){
        document.querySelector('.sjh_popbg').style.display =  "block";
    })
    var gban = document.querySelector('.sjh_pop-close');
    gban.addEventListener('click',function(){
        document.querySelector('.sjh_popbg').style.display = 'none';
    })
})();